People are evacuating their homes near Yarnell, Arizona, following a wildfire breaking out in the Tenderfoot hills.

The #Tenderfoot fire quickly spread to cover 300 acres Wednesday afternoon, according to Phoenix NBC-affiliate KPNX. Later in the evening, officials confirmed it grew to 600 acres, according to ABC-affiliate KNXV.

“Right now as we speak the fire is coming down over the mountain right in front me,” said Yarnell resident, Patrick Bernard, a miner and father of five, according to KPNX. “There’s a lot of smoke on the east side and it’s burning the top of the mountain right now. It’s coming across the east line of Yarnell, burning across the edge of those houses. And there’s helicopters dropping water.”

Yarnell has a history with destructive wildfires. Three years ago, the Yarnell Hill Fire killed 19 Granite Mountain Hotshots, firefighters in a special wildfire division of the Prescott Fire Department.

“Conditions in Central Arizona are ripe for fire,” tweeted author Fernando Santos, who has written about fire fighting. “Hot, dry and windy with the #TenderfootFire growing to 400 acres from 25 acres in past two hours.”